Spool mechanism for musical-instrument-player devices



Oct. 25, 1927. c. H GREEN SPOOL amen/ms! FOR MUSICAL mswnmmur PLAYERnsvrgns Filed Oct. 5, 1923 3 Sheets-Shea?- 1 fimzo CLIFFORD HG E &

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Oct. 25,1927. c. GREEN 7 SPOOL MECHANISM FOR MUSICAL INSTRUMENT PLAYERDEVICES Filed 001. a, 1923' s S&eets-Sheet 1, Q 1 G 1 1 N; E m R E-Z- Q(3 JR/e CLlFFORD H. GREE Oct. 25, 1927. c. H. GREEN SPOOL MECHANISM FORMUSICAL INSTRUMENT PLAYER DEVICES Filed Oct. 5, 1923 s sheets-sheetshiggiillllll/llr/l nnnnnn'. nnnnnnnnnnnnnnngnm [5 O f g; 49 '51 473L 212297 4 6 22 2 716 72101, yd/wa CLIFFORD H. GREEN Patented Oct. 25, 1927.

run?! ran STATES retina cnrrronn H. ennnn, orenarrn BABIPEMIQHIGANQASS'IGNOR,BY.MES1\TE ASSIGN- EN Z To AU aria usic anIns'rnuiirnNjr centenary, or erman narrns,

vrronrean, A conronarron or nnrewaan.

SPOOL mnormnrsivr ron AMUSICAL-INSTRUMENT-PLAYER nnvrons.

Application .filedL0ct0'b6T-3, 1923. Serial No. 666,220.

My present invention relates 'to playerdevices of therein-controlledtype, and 'has more particular reference to-the' mechanism which unwindsgthQ record-sheet past the 5 tracker-board fromthespool containing thesame while the musical selection is :being played and which, after theselection :has been played will re-wind the record-sheet upon theoriginal. spool and stop (the sheet .1 in. a position wherethe1t1'acker-boa-rd may, if desired, 'be again brought into contacttherewith, close to the,first' pei'foi'atio11s ad j acent to thestartingvendj of the recordssheet.

In this connection, 1 have provided devices l5 l'lltl'f-WVl'll heautomatically brought intooporation to govern the speedofthe reTWiHClingoperation; and to slow up and stop such operation at the proper timeand'inthe proper manner to stop the sheet in I the ,laforesai'dposition, connected to :the taken-up spool, ready for a repetition;of-the nnwindinganid revinding operation. (I have also; provided deviceswhich in the event the ire-Winding mechanism fails to; perform its;functions at the end oftheselection, ill'operate automatically toprevent the record-sheet :fIOII] being torn or damaged @ELIlCl-WhlCll,if such an emergencyarises,:Will operate automatirally to preventjamming or straining of any part of the mechanism. :This structure alsocontainsa novel brake device that-is actuated automatically to stop therewvind oftherrecord sheet and which issetin operation througln themedium of the re winding mechanism. a

It will beobvious thatiamong the objects of my invention are ,theprovision of amechanism, having the above-mentioned chanacteristicswhich is so compact in constr-uction that: itmay be placed 5 in g thespace allotted to it i-n a drum or magazine containing a pluralityof-suchinechanisms. :It is also simple; in: the"arrangement of itsparts, so that there is; nothing to; -get out of; order, an d; it isdependable anrl effective in operat-ion.

'1 prefer .to carry out my [invention in substantially (the manner-;hereina'fter "described,referencebeing had to the acriompanyingdrawings that form-a part of this 56 specification.

T11) the drawings "Figure .1 is autop plan of oneof my improvedspool-mechanism .units of a coincontrolled player-device detachedxfromthe 5 cylinder or drum upon which a plurality of suclrunits areusuallymounted.

igQ 2 is ,a sectional view, looking at the right-hand end of v thestructure shown in Figure 1, with the .adjacentside plate for journalingorsu-pporting the elementsre moved but shownin'broken lines.

Fig. 3is an end viemiloolringl.at;tl1e lefthandiend ofthe structureshown iii-.Figure 1, witha .portion of the adjacent v journalingandsupporting plate'broken away.

".Fig. 4 is a longitudinal side elevation. looking at the left side ofthe structure shorvndnliigure*2, showing one part of the automaticthrow-off mechanism in detail.

Fig. 5 is a longitudinal side elevation, loolgingfat the right side ofthe structure shown inFigureQ showing another pa rt of the automaticthrow-off mechanism in de taihavhichpart also;serves as part ofthemeans. forslorving up and stopping the re- Winding operation. V

;E- ig., 6,is abottom: plan of the device shown in l?i.gure-1, the partsbeingin normalcposition forislowing up vand stopping the rewindingoperation. a

iFlgUTlS a view similar. to Figure .6, drawn schematically and showingthe a relative positions of tlieiparts when the mechanism for slowing upand stopping the reewinding is thrown out of operation.

:Inz the drawvingasl have. employed similar referencev characterstodesignate the same parts "wherever they occur 1 in [the several viewsand, by referring tosaidgdrawings, itiwill be seenthe structureis ofaunitary character and, comprisestwo side a plates 10 and :11, itrespectively, that are connected together :hy j'parallel,longitudinally, disposed tie-rods '12, .13 and 54, two Of WhlChtlQ-I'OdS, 95 asmwill hereinafter ,appear,- act as guides fortherbifurcatedvarmsor lateral extensions of certain traveling blocks orthreaded. sleeves record-carrying spool.

used in connection with the throw-off mechanisms and with the mechanismfor slowing up and stopping the re-winding operatlon. Adjacent one ofthe upper corners of the plates and 11 are mounted the spindles 1 1 and15 of the take-up spool 16 which is of the [usual type, beingcylindrical in form and having end flanges 17 to guide the paperrecord-sheet as it winds thereon from the One of the flanges 17 has alarge gear 18 secured to it outside of the cylindrical portion of thespool 16, while the opposite flange of said spool has an enlarged hub oraxial embossment 19 that is acted upon by a suitable brake-arm 20, aswill hereinafter be described. I

Suitably mounted in the upper portions of plates 10 and 11, opposite thetake-up spool 16 are the devices for receiving and journalling theremovable record spool 21,

which is also of theusual type, having end flanges 22, and which haswound upon it, when placedin-the unit, the perforated recordsheet 23.The spool receiving and journaling devices just above mentioned,comprise a retractable bolt 24, mounted in a cylindrical housingprojecting outwardly from the side plate 10, the projected end of saidbolt passing through the plate 10 and I entering an axial aperture orrecess in the adjacent end of the spool 21, and a pinion 26, mounted toturn upon a short shaft 27 projecting inwardlyfrom plate 11, whichpinion has a pair of clutch-pins 28 projecting from the hub thereof thatenter correspondin apertures in the adjacent end of the spool 21 whenthey are brought into alinement therewith. The pinion 26 is providedwith an annular groove 26" and is maintainedupon shaft 27 by means ofthe depending flange 29 on the upper horizontal arm of an invertedL-shaped bracket 30, secured to the side plate 11 so as to overhang thepinion so that the flange 29 projects into the annular groove 26 as seenat the rightpinion 26, when rotated during the re-wind- 7 ing of therecord-sheet, will thus rotate the 28 and removed from the unit.

spool 21 and, by retracting bolt 24, the spool 21' may be withdrawn fromthe clutch-pins By retracting bolt 24 the spool 21 may be removed.

The gear 18 of the take-up spool 16 is engaged and driven/by a rotatablespur-gear 31, whichderives its motion from any suitable source of powerand is moved bodily by certain pneumatics or other elements of the havenot been disclosed herein and therefore i need not be further described.

The pinion 26 meshes with a large gear 32 mounted on a longitudinal rod33 conn-ecting the side plates 10 and 11. A comparatively long coiledspring 34 surrounds this rod 33 practically throughout its length andhas one end connected to the hub of the gear 32, while its. opposite endis connected to a block 35 which is mounted to turn on the oppositeend-part of the rod and to which block the brake-arm 20 is rigidlyconnected. The spool 21 containing the record-sheet is not connecteddirectly with the take-up spool 16 except through the medium of therecordsh-eet 23 and, when the take-up spool 16 is rotate'd'by thespur-gear 31 it will cause a rotation of the spool 21 by the unwindingof the record-sheet therefrom. This actuates pinion 26, which drives thegear 32 and winds up the spring 34 upon the rod 33. The winding of thespring 3 1 is for the purpose of creating and storing the power ormotive force by which the record-sheet may be rewound upon its spool 21.Under normal conditions, when the last of the sheetperforations havebeen reached, the aforesaid certain pneumatics or other elements of theplayer-devices-raise the spur-gear 31 so thatno further winding motionof the spool 16 is had. The lifting of spur-gear 31 leaves the spool 16free to rotate, and it is then turned in a reverse direction through theaction of the spring 34 which now begins to rewind the record-sheet, thelatter being driven through the large gear 32 and pinion'26.

lVhile the spring 341 is being wound tighter, the brake-arm 20 is beingpressed with increasing friction against the hub 19 of the spool 16.This, however, does not effect the driving of the spool 16 by thespur-gear 31 while the music is being played, as the spurgear isactuated by a motor strong enough to overcomethe friction of thebrake-arm but upon the completion of the selection and the disengagementof spur-gear 31, the spool 16, except for the action of the brake-arm20, would rot-ate too rapidly and, at the end of the re-winding; actionthe momentum of the spool would tend to carry it'beyond the desiredstopping point and wind the record-sheet reversely thereon. Thebrake-arm, however, exerts a compensating action frictionally againstthe hub 19, the greatest pressure being applied at themoment rewindingis started and gradually decreased as the rewinding continues. suchdecrease being due to the slacking of the spring 34:.

In order to stop the re-winding action at the desired time withoutcausing a sudden jar or jerk upon the record sheet, I have provided anovel mechanism which will now be described. Mounted in the side plates10 and 11 isa rotatable screw 36, which is of alength to extend from oneside plate to the other, the endparts thereof being reduced andprojecting through said plates, as seen in Figure of the drawings.Shoulders 37-and 38 are formed by reducing the 1 '1 36 is rotated whilethe record-sheet is being wound upon said take-up spool. YVhile thescrew 36 is rotating, it feeds a traveling block 40 carried thereby,whichblock is bored and interiorly threaded to provide for this movementand is provided with a lateral extension 41 that is bifurcated so as topass upon opposite sides of thecross-bar or tie rod 13. The tie-rod 13thus prevents rotation of the block 40 while it is being movedlongitudinally upon the screw 36. Interposed between the traveling block40 and the pinion 39' is a short coiled spring 42 that surrounds thescrew 36, and a leafspring 43 presses against the outer end of saidscrew adjacent said pinion to maintain the screw in itsfnormal position,with the pinion 39 in mesh with the gear 18. When the end of theselection has been reached, the traveling block 40jwill have beenmovedto some position alongthe screw'36,'as shown "in dotted lines inFigure 6. The driving.

spur-gear 31 having been disengagedfrom the gear 18 onthe take-up spool,the power from the tightly coiled spring 34 begins to unwindthereoordl-sheet from the spool'16 which, through the gear 18 and pinion39, rotates the screw 36 in the opposite direction and returns thetraveling block 40 to normal tpositioinand in doing so presses the sameagainst the interposed spring 42, com? pressing it until the friction ofthe spring acting between and upon-therotating pinion 39 and thenon-rotatable block40 is sufficient to-counteract the re-Winding actionof the power-spring 3i, whereupon the entire mechanism will stop. Thiswill be at such a point on the record-strip that the initialperforations therein will be in a position to be again'engaged by thetracker-board whenever the selection is to be played; V

If, for any-reason, the spur-gear31 should not be disengaged from thelarge gear 18 when the end of the record-sheet had been reached, afterthe selection had been played. the record-sheet would continue tobe-wound upon the take-up spool 16 and would be torn from the spool 21.In such a contingency, in order to avoid such tearing of therecord-sheet, I provide a longitudinal slot 44 in the record-spool 21'and insert therein a tape 4'5, secured to and extending from the end ofthe record sheet :23, such structure being illustrated in Figure 7 ofthe drawings. a, This method of securing the recordsheet to itsspoolpermits the sheetto be entirely withdrawn from the spool when theend of the sheet has been reached, and the connection hetween the talieup spool 16 and the record spool 21 maythus be broken with out damageto-the sheet. Obviously, however, the record-spool would-then Ebefree tobedriven in a reversed direction, asin .re-winding, by thepower-sprinsgi34, th'e'pinions 26 and gear 32, and the continued drivingof the take-up spool 16, :by the spur-gear 31, would continue therotation of thescrew 36 and result in jannniingthe traveling block 4:0against the side plate 10. In order to avoid this, I arrange todisconnect the pinion 39 from the gear'18, and to this end' I haveprovided a threaded rod L6, which extends from one side plate to theother and is journaled therein so that it may be rotated; A pinion 47 isfast on this rod, preferably beyond the threaded portion thereof and isin 'HlQSll with the gear 32 that is actuated by the unwinding of thepowerspring-34. During the playing of the selection and the unwindingoftherecord-sheet from the spool 21,the threaded rod 1-6 is rotated anda traveling bloclr48 carried thereby is moved from adjacent one end'ofthe rod toward the other end thereof.

Mounted upon the rod, but not engaged by the threads thereof, is acompressible'sleevestructure consisting ofa coiled expansion free tomove longitudinally thereonfindependently of the threads of said rod.Under normal operation of the device, the traveling :block 48 will notbe moved toward this compressible sleeve far enough itofcontact withsame, but whenever the hereinbefore' mentioned contingency arises,thislblock 48 will travel down into contact with the adjacent end of thecompressible sleeve 4950 and carry the same to the end of the rod,

where-the opposite end of said compressible sleeve 4950 will engagewith, a lateral pro- 7 jection or pin 51 carried upon the adjacent endof a rocker-arm 52,whic'h latter is ful'- crumedintermediate its .endson the sideplate 10 and at its opposite end is engageable with thereduced projecting end 3630f the rotatable screw 36. The arm 52 will berocked by the thrust of the compressible sleeve 49%50 and shift thescrew 36 bodily in a lon itudinal direction, againstthe ten -r sionofleaf-springAS, until. the pinion'39 has'been shifted out of mesh withthegear 18; the screw 36 will then nol'o-nger bee-r0:

tated by the take-up spool 16; the traveling block 40 will remainstationary upon the screw 36; and the structure-will be maintained inthis condition without damage to any portion of the unit although in themeantime, the driving spur-gear 31 may 0011-.

. tinue to actuate the gear 18 and rotate the take-up spool 16 uponwhich the recordsheet has been wound. The traveling-block 48 on thethreaded rod 46 has a bifurcated arm 53 that extends laterally therefrominto engagement with the tie-rod 1 connecting the side plates and 11, sothat rotation of the block 48 is prevented in the same inanner asvisthat of the block 40, heretofore described. The spring 49 of thecompressible sleeve cushions the action of the block 48 and thusprevents a sudden jar to the mechanism, and gradually slowing down thefurther longitudinal movement of block 4-8 on the rod 46 and finallystopping the motion of the gearing and other mechanism that has beenactuated by power-spring 34. 4

When a new spool is to be placed in position the attendant shifts screw36 to disengage the pinion 39 from the take-up spoolgear 18, whereuponthe record-sheet may be manually wound upon its, spool 21 and the latterremoved by retracting the bolt 24;. The new spool is then inserted inposition and the end of the sheet drawn therefrom andwound upon thespool 16 (with the pinion 39 still disengaged) until the first per--forations are below the tracker-board whereupon the pinion 39 is movedback into mesh with gear 18. v V

I have herein disclosed my inventionin connection with a player-deviceof the automatic coin-controlled type, which is merely a typicalembodiment, as it is apparent the structure with but slight alterationmay be adapted for use in connection. with other types of player-devicesand mechanically operated musical instruments. It will be un derstoodthat I vdo not herein limit myself to any particular type of device, andsuch changes or modifications as may be made are fully contemplated ascoming within the V record-sheet is wound, a take-up' spool, andscope ofthe appended claims.

WVhat I claimis: 1

1. In a device of the class described, a record-sheet, a'record-spoolupon which said record-sheet is wound, a take-up spool, andmeans-operated by said record-spool and acting upon said take-up spoolto retard the re-winding of said record-sheet-upon said record-spoolafter it has been unwound therefrom by said take-up spool, i

2. In a device of the class described, a recordheet, a record-spool'upon which said means operated by the unwinding of said record-sheetfrom said record-spool for storing power to retard the re-winding ofsaid record-sheet upon said record-spool.

3. In a device of the class described, a record-sheet, a record-spoolupon which said record-sheet is wound, a take-up spool, and

meansoperated by said record-spool andacting with variation upon saidtake-up spool to retard the re-winding of said recordsheet upon saidrecord-spool after ithas been unwound therefrom by said take-up spool,such variation in the action of said means being proportionate to theamount of said record-sheet which is unwound from said record-spool.

4:. In a device of the class described, a record-sheet, a record-spoolupon which said record-sheet is wound, a take-up spool, andmeansoperated by the unwinding of said record-sheet from saidrecord-spool for storing power to retard the re-winding of saidrecord-sheet upon said record-spool, the de' acting upon saidspool-retarding means and actuated by the unwinding of said recordsheetfrom said record-spool to increase the power stored in saidpower-storing means as said record-sheet is unwound from saidrecord-spool. l

7. In a device of the class described, a record-sheet, a record-spoolupon which said record-sheet is wound, a take-up spool, a geartrainactuated by the unwinding of said record-sheet from said record-spool,apowerspring operatively connected to said geartrain and wound by theactuation thereof, and braking means acting upon said takeup spool andoperatively connected with said power-spring.

8. In a device ofthe class described, a rec- V ord-sheet, a record-spoolupon which said record-sheet is wound, a take-up spool, re-

leasable means for actuating said take-up spool to unwind saidrecord-sheet from said record-spool, and means operated by suchunwinding of said record-sheet for storing power increasingly as saidrecord-sheet is unwound to re-wind said record-sheet upon 6. Ina deviceof the class described, a,

said record-spool and to retard such re-.

winding, whereby, when said take-up spool actuating means is released,said record-sheet will be re-wound upon said record-spool and v thedecrease in the stored re-winding power,

whichv decreases as such reswinding progresses, will be proportionate tothe decrease in-the power acting to retard such re-win'ding.

9. In a device of the class described, 'a record-sheet, arecord-spoolupon which said record-sheet: is'wound, a take-up spool,releasable-means for actuating said take-up spool: toiun-windvsaidrecorchsheetct'roni said, record-spool, a. power-springarranged to bewounctbysuch unwindingof said: recordsheet. and} tocfi'ect therewindingf thereof,- when permitted,and=a brake acting. upon saidtake-upspool and actuated by said powerspring toiretard the rewinding of saidrecordsheet, whereby, when said: take-up spool. actuating means isreleased, said powerspring-Willa effect the re-winding ofsaid-record-sheet upon said record-spool and will retard-suchrewindingthrough the action of saidlbrakeupon said take-upspool, theretarding action of said power-spring being proportionate to; thelie-winding action thereof. a l

10. In a device of the class described, a record'-sheet, arecord-spoolupon which said 7 record-sheetis wound, a take-up, spool, re-

power-spring operatively connected to saidgear-train and wound by: theactuation thereof, releasable means'for actuating said take-up spooltounwind said record-sheet from said record-spool, and a hrakegoperatively connected with i said power-spring :and engaging said take-up-spool, wherebyg upon therelease of: saidtakeaip, spool actuating means,said record-sheet is re-woui-d upon said record-spool by said;power-spring, and gear-train and the braking efiectot said brake uponsaid take-up spool-is decreased.

12. In device of theclass described, a record-sheet, a record-spool uponwhich saidrecord-sheet is wound, a take up spool,

means for rotatingasaid take-up spool to Wind said record-sheet thereonfrom said record-spool, separate means for re-winding said record-sheetupon said recordfipool, a shaft, a traveling block movable along saidshaft during"?- the re-zwind'ingofjsa'id record-sheet, a deviceactuatedbyuthe rotation of, said take-up spool, and, frictionmeans; in;

terposed, betweensaid, device and said block, whereby the movement a ofsaid block along said shaft may causei'rictional engagementbetwee'nsaid. device andsaid meansv l3. llnfandevice of the classdescribed. a, record-sheet, arecordrspool upon which saidreco'rdsheet:iswound, a take-up. spool, HlGaIISUfOI' rotating saidtakeup spool to wind said, record-sheet thereon from said record-spool,separate, means for, unwinding said record-sheet from. said ake-19813001 and re-.win.ding it upon said recordf'spool, a, wormsshaft,traveling block propelled alongsaid, wor-lnrshaft as said. record-sheetis unwound from saidv take-up spool, a device carried upon said, worinshaft and: actuated by the rotation'of said takesup spool, and frictionmeans interposed between said block andmsaid device,whereby,as saidrecord-sheet is unwound from said take-up spool; said block will. travelalong Said worm-shaft, encounter said friction means and cause itto,engagesaid device andthere by retard and subsequently stoptheunwindingof said record-sheet. from said take-up spool. I

1,4. In a, device of the class. described, a

record-sheet,v a record-spool; upon which said record-sheet is. wound, atake-upspool, means tor rotating said tal e-up, spool to wind saidrecord-sheet thereon, separate means-for ire-winding said record-sheetup.- on-saidr record-spool, worm-sliaiit -a traveling block movablelongitudinally thereon from; adj acentione endtowards the other end otsad wor n shaft during thew-inding 0st sa -:1 record sheet upon, saidtake-up spool,a

device fixed on said wor1n-shat and actur ated by the rotation; of saidtake-up spool,- and means interposed between said device and sa-idbloclswhereby to cause a frictional ns eementbetween said, evice, a saidrlfiea-nswhen the latter is engagedby 'said ockr' 4 15; In} a device oithe-class desc 'sih'ed a record-sheet, record-.spool upon. which sa-idzrecord sheet is wound, a-take-up spool,

neansi'f windisald recond-sheet thereon, a worm actuating saidtakeruppepool, to

shatt, a" traveling block HlOVfl'b16-lQ11gltl1; dinal y on saidWorm-Shaf om; nd; t wards one end 7 thoreot during; the winding andunwinding of said record-sheet upon and "from said; itakeeup spool,respectively, a deviceifixedzon saidworm h fit: n a uated by-therotationofinsaid take-upspool, and: acoiledexpansion-spr ng. utr imding saidworm-shaft between said; devicezand said block, whereby, when said block5 moves is compressed" into frictional enga ement I saidrecord-sheet iswound, a take-up spool, means for rotating said take-up spool to windsaid record-sheet thereon from said record-spool, separate means forunwinding said record-sheet from said take-up spool and re-winding itupon said record spool, a worm-shaft having actuating means throughwhich it is rotated by said take up spool rotating means, a travelingblock engaged by said worm-shaft and moved thereby away from and towardsone end thereof as said take-up spool is turned respectively in one orthe other direction,- and a coiied expansionspring surrounding saidwormshaft adjacent its actuating means, saidexpansion-spring beingpositioned to be engaged by said'block and compressed againstsaielactuating means to frictionally retard and subsequently: stop there-winding- 01 said record-sheet upon said record-spool.

"17. In a device of the/class described, a record-sheet, a record-spoolupon which said record-sheet is wound, a take-up spool, means forrotating said take-up spool to wind said record-sheet thereon from saidrecord-spool, separate means for unwinding Said record-sheet from saidtake-up spool and re-winding it upon said record-spool, a worm-shaftactuated by said take-up spool rotating means, a traveling block engagedby said worm-shaft and reciprocable longi- 'tudinally thereon, a pinionfast on said worm shaft and engaged by said-take-up spool rotatingmeans, and a spring surrounding said worm-shaft and adapted to becompressed between said block and said pinion when the former approachesthe latter, whereby to frictionally retard and subsequently stop therotation of said take-up spool at the end of the re-wlnding operation.

'1'8.In a device of the-class described, a record-sheet, a: record-spoolupon which said record-sheet is wound, a take-up spool, a

first means for rotating said take-upspool to wind said'record-sheetthereon from said record-spool, asecond means for unwinding saidrecord-sheet from said take-upspool 'andre-winding it upon saidrecord-spool,

a third means disengageably connected with and operated by said firstmeans, and a fourth means actuated by said second'means to effect thedisengagement of said third from said first means.

19. In a device of the class described, a

record-sheet, a record-spool upon which said record-sheet is wound, atake-up spool,

means for rotating said take-up spool to pingthe unwinding of saidrecord-sheet means for-retarding and subsequently. stopping theunwinding of said record-sheet from said take-up spool at the end ofthere -i winding operation,a worm shaft actuated by said rewinding means, atraveling block engaged by said worm-shaft andreciprocablelongitudinally thereon,jand means whereby the-movement ofsaid block beyond a given point will effect the disengagement of saidretarding means from said rotating means, 1 I

21. In a device of the class described, a record-sheet, a record-spoolupon whichsaid record-sheet is wound, a take-up spool, means forrotating said take-up spool to wind said record-sheet thereon from saidrecord-spool, means for unwinding said record-sheet from said take-upspool and re winding it upon said record-spool, an end wise movableworm-shaft'actuated by said take-up spool rotating means, a travelingblockengaged by said worm-shaft and reciprocable longitudinallythereon,a pinion fast on said worm-shaft and engaged'by said take-up spoolrotating means, and means actuated by said re-winding means for shiftingsaid worm-shaft endwise to disconnect said pinion from said rotatingmeans. i

22. Ina device of the class described, a record-sheet, a record-spoolupon whichisaid record-sheet 'is wound, a take-up spool, means foractuating said take-up. spool whereby saidrecordsheet is unwound fromsaid' record spool, a worin-shaft,-=a pinion v thereon rotated by saidtake-up spool actuating means, a traveling block carried upon saidworm-shaft and reciprooated thereby, a friction element engaged by saidblock upon its movement in one direction, and means for bodily shiftingsaid worm-shaft wherebysaidpinion is disengaged from its actuatingelement. I a

23; In a device of the class described, a record-sheet, a record-spoolupon which said record-sheet is -wound, a 'take upgspool, means foractuating said; take-up "spool wherebyv saidrecord-sheet is unwound fromsaid record-spool, a geartrain actuated by the unwinding. movement ofsaid recordspool, a colled power-spr1ng operatively contake-up spoolionnected to said gear-train and Wound by the actuation thereof, aworm-shaft, a pinion thereon rotated by said take-up spool actuatingmeans, a block reciprocated by said Worm-shaft, a friction elementengaged by said block upon its movement in one direction, and means forlongitudinally moving said Worm-shaft to disengage said pinion from itsactuating means.

Signed at Grand Rapids, county of Kent 10 and State ofMi0higan, thiseleventh day of September, 1923.

CLIFFORD H. GREEN.

